Well elevator



Sept. 7 1926.

1,599,144 H. M. PAULSEN Z3 INVENTOR) jngflpwwlie/w' ATTORNEYS. J

Patented Sept. 7, 1926.

UNITED STATES PATENT' OFFICE.

HENRY H. PAULSEN, OF LONG BEACH, CALIFORNIA, ASSIGNOR TO IOUNN MANU- mcrunnve COMPANY, or oxnann, romrm. Y

CALIFORNIA, A CORPORATION OF CALI- WELL ELEVATOR.

Application sled September 12, 1923. Serial No. es2,1s2.

This invention relates to elevators, such as used for lifting casing and other objects, and the said invention has for an object an elevator adapted to insure that the work is properly embracedby the elevator prior to load being imposed upon such elevator.

Further object is the provision of an elevator which is novel in structure, simple to manufacture, economical as to repairs, 'and' fool proof and positive in its action.

lVith the above and other objects in view, the invention consists in the novel, and useful provision, formation, construction, association, and relative arrangement, of parts,

members and features, all as shown in a" certain embodiment in the accompanying drawing, described generally, and more particularly set forth in the appended claims.

In the drawing:

Figure 1 is a side view of the improved elevator, with casing shown in dotted lines;

Figure 2 is a top plan view of the elevator shown inFigure 1;

Figure 3 is a cross sectional view on the line 3-3 of Figure 2 and looking in the direction of the appended arrows;

Figure 4 is a fragmentary cross sectional view on an enlarged scale, with the said view taken ,on the line 4t of Fi ure 3 and looking in the direction of t e appended arrows; and,

Figure 5 is a fragmentary perspective view, certain parts being in section, with the said view taken on the line 5 5 of Figure 4, and looking in the direction of the appended arrows. 1

Corresponding parts of all the figures are designated by the same reference characters.

Referrin now with particularity to the drawing, the elevator is designated as an entirety and in one embodiment by A, and said elevator includes a body member a and a gate member 6 hingedly associated with the body. In the showing the body member a is provided with two diametric extensions 1 and 2, which extensions are adapted to cooperate with links, a bail, or the like, for t e purpose of carrying the said elevator. The said extensions, in the showing, may be curvedly recessed, as shown at 3 and 4, thus insuring that the said links or bail shall not be disengaged from the extensions, due to jar or otherwise, when the elevator is in use. In addition, the said body is provided with two diametric extensions 5" and 6,

which are spaced from the extensions 1 and 2, and the extensions 1 and 2 may be provided with lugs T and 8, through which lugs and the extensions bores 9. 10, 11 and 12. Bolts may be passed through each pair of aligned bores, thereby insuring that the bail will not be disassociated from the extensions 1 and 2 when the elevator is non-load. sustaining. As is usual, the body a is formed with a curved portion, as shown at 13, within which curved portion and a curved portion of the gate 6, as shown at 14 work is placed to be embraced by the body and the gate when the gate is latched closed, as shown in Figures 1 and 2. The body a is'provided with an inset recess, as shown at 15, within which recess is received a nose portion 16 of thegate b when said gate is latched to the body. So far the description of the elevator is conventional, and any other form of elevator mightbe adopted in practicing the invention. The particular improvement in the elevator consists in the provision of gate actuating mean B. It often happens that when a load is imposed upon an elevator it will be found that the work has not been properly confined within said elevator, with the result that the gate will swing open and allow whatever is being carried by the elevator to fall therefrom, often resulting in great danger to operators. The elevator is adapted to carry casing, tubing, sucker rods and the like, such as are used in oil well practice, and the means B about to be described gives positive assurance that the gate member of the elevator is latched closed prior to the elevator sustaining load, and in any event the elevator gate cannot re-open, whether the gate is latched or not, while the elevator is sustaining load.

The said means B includes a cam member 0 and a plunger member (I. The cam member c is carried by the gate, being an extension of a knuckle 17 of such gate. As is usual, the gate member is provided with two spaced knuckles 17 and 18, and the body a is formed wit-h an extension 19 adapted to be interposed between such knuckles 17 and 18, the said gate being in part carried upon such extension 19. The two knuckles and the extension 19 are provided with aligned bores, through which is received a pin for maintaining the gate and body in hinged relation. The lower knuckle 17 is 5 and 6 are aligned shown in Figure I is ' diameter than provided with the cam shaped lug as 3. The body a is formed with a curved recess 20, adapted to accommo date the cam member 0 and permit the elevator gate 6 to swing open or closed. The plunger member 03 includes a head 21, o1ne d with a stem 22, at the end of which stem s formed a curved nose 23. The said stem is likewise provided with a longitudinal groove or key-way 24. The body a is formed with a recess 25, adapted to accommodate the head '21 when the plunger is in a certain position. Thebody a is formed with bores 26 and 27, adapted to accommodate the stem 22 of the plunger. The bore 27 1s of smaller the bore 26, the said plunger being adapted to have a spring 28 colled about the'same'and confined within the bore '26 and hearing at one end against the head 21 and at the other end against the flange 29 included between the two bores 26 and 27 The said body is likewise provided with a lateral screw threaded bore 30, within wh1ch is received a screw 31, provided with a part adapted to enter the longitudinal groove or way-24 in the stem of the plunger, the purpose being to prevent rotation of the plunger Tao during movement thereof. The end of such plunger stem, as stated, is" formed with a grooved nose 23, and said nose 18 adapted to cooperate with the periphery of the cam c. It will be noted that the cam is segmental in form, and that the face of such cam curves downwardly from the top edge of the knuckle 17, as shown at 32, to the bottom, as shown at 33, partlycircumscribing the axis of thehinge. The curved nose of the lunger is adapted to ride on such cam face.-

he normal position for the parts wouldbe that illustrated in Figure 1 in full lines, with the head 21 of the plunger extending above the top of the elevator. When work is to be imposed upon the elevator, such as for instance the carrying of casing, illustrated at dotted lines-in Fi ure 1 at 34, a collar or coupling carried by the casing will have a portion thereof contact with the head 21. It willbe noted that the said head 2l extends asfar as'the curves 13' and 14 of the vbody and gate and that the end of such head 21 is curved, as shown at 36. Thus.

when tubing 34 havin the collar or sleeve or coupling 35 is confined within the body a, the

' confines of the slot 25 of said body. As the plunger is guided within the bores 26 and 27, the curved nose of such plunger is forced downwardly u on the cam edge of the cam member 0, an this cams the gate 1) closed, so that thesame will embrace apart of the work. It is hence impossible to place any load u n the gate without camming the gate 0 osed to the body member. Upon the releasing of any load from the elevator, the spring member'28 will lift the plunger from the cam edge of the cam and allow the gate to be opened. Latch means d is provided for the gate and said means may be conventional in form, consisting of a handle 36 joined with spaced knuckles 37 and 38, which spacedknuckles are on opposite sides of a knuckle 39 carried by the gate 6, there being a pin adapted to be passed through the said knuckles for holding them in working re- 1 lation. The knuckles 37 and 38 carry a latch head, shown dotted in Figure 2 at 40, the latch head being adapted to cooperate with a member 41 carried by the body a. In this connection it will be seen that the end 16 of the gate is received within the cutaway portion 15 of the body, and that the latch head is so formed as to automatically look when the gate is swung closed. The latch may be released bypulling upon the handle 36, which would release the latch head 40 from the member 41. However, it is impossible to open the gate while load is imposed upon the elevator, for the reason that the plunger will be depressed and prevent such opening. v

In Figure 5 the upper arrow shown at 42 indicates movement of the plunger to close the gate, and the lower arrow 43 of said fig- "ure" shows the directionalmovemerit of the gate during closing operation thereof. Furthermore, the said section 55 of Figure 4 and the showing of Figure. 5 illustrates the parts revolved to view in the plane of Figure 1. In Figure 4 the gate is being revolved in the direction of the arrow to close the same when the plunger is pushed down: wardly.

I have thus provided an elevator which is practical, fool proof in operation, easy of manufacture and with few parts to get out of adjustment.

"It is obvious that various changes, modifications and variations may be made in practicing the invention in the particular showing, and that said departure from.

a fair interpretation of the invention, and as set forth by the scope of the appended claims.

I I claim:

1. In an elevator of the character disclosed, a body adapted to be presented to work, and provided with a gate cooperating with the body; of means disposed in position to be engaged and substantially vertically actuated by the weight of the work by the work to which the body is applied to actuate the gate to move the same in a closing direction.

2. In an elevator of the character disclosed, a body adaptedto be presented to work, and provided with a gate cooperating with the body; of means disposed in posithe Work to which thev body is applied to; actuate the gate to move the same in a closing direction; said means for actuating the gate serving to retain the same in closing posi tion.

work, and

3. In an elevatorof the character disclosed, a body adapted to be presented ,to work, and provided with a gate cooperating with the-body; of means disposed in position to be engaged and substantially vertically actuated by the Weight of the Work by the work to which the body is applied to actuate the vgate to move the same in a closing .direction; latch .means being further provided for holding the tion;

4. In an elevator of the character disclosed, a body adapted to be presented to provided with a gate cooperating with the body; of means disposed in position to be engaged and substantially verticallyoactuated by the weight of the Work by the work to which the body is applied to actuate the gate to move the same in a closing direction; said means for actuating the gate serving to retain the same in closing position; latch means being further provided to retain the gate in closing position.

5-. In an elevator ofthe character disgatein closing posiclosed, a body adapted to be presented to work, and provided with a gate cooperating with the body; of means disposed in position to be engaged and substantially vertically actuated by the weight of the Work by the work to which the body is applied to actuate the'gate to move the same. in a closing direction;'said means comprising cooperating cam and plunger members respectively associated with. the body and the gate.

" 6. In an elevator of the character disclosed, a body adapted to be presented to work, and provided with a gate cooperating with the body; of means isposed in; position to be engaged by the w body is applied to actuatethe gateto move the samein a closing direction; said means comprising. cooperating cam and plunger members respectively associated with the body and the. gate; said gate being hingedly connected with said body, and said cam member having a working surface 1ying in a curved inclined path partly circumscribing the .az zis of such hinged connection.

7. In an elevator of the character disclosed, a body adapted to be presented 'to work, and provided with a gate cooperating 'with thebody; of means disposed in position to be engaged bythe work to which the body is appliedtoactuate the. gate to move plunger into elevated rk to which the work when said the same in a closing direction; said means comprising cooperating cam and plunger closed, a body adapted to be presented to work, and provided with a gate cooperating With the body; of means disposed in position to be engaged by the work to which the body is applied to actuate the gate to move the same in a closing direction; said means,

comprising cooperating cam and plunger members respectively associated with the body and the gate; said gate being hingedly connected with said bodyjand said cam member having a working surface lying in a curved inclined path partly circumscribing the axis of such hinged connection; said plunger having" a. portion normally rising above the upper surface of the body, and accommodated in a chamber in,.the body; re;

provided urging the position, whereby the gate may be free to move in an opening direction. I

9. In an elevator of the character disclosed, a body adapted to be presented to Work, and provided with a gate cooperating with the body; of means disposed in position to be engaged and substantially vertically actuated by the weight of the Work by silient means being the work to which the body is applied to actuate the gate to move the same.

10. In an elevator of the character described, a body adaptedto be presented to work and provided with a gate cooperating with said body, and engaging means on said gate .and body whereby the weight of the work actuates the scribed abody adapted to receive-work, a gate cooperating with said body, and means operated by the weight of the work adapted to actuate said gate into closed position.

scribed a body, body, said body being formed to receive gate" is in open position, and

gate into closed position. 11. In an elevator of the character de- 1&5

' I '12. In an elevatorof the character de- I a gate cooperating with said cooperating means on said body and gate actuated by the weight of said work to actuate said gate into closed position.

.In testimony whereof, I have signedmy name to this specification.

V HENRY M. PAnLsEn. 

